Toyota Venza: Transmitter ID not Received in Main Mode (C2126/26)

Toyota Venza Service Manual / Tire Pressure Monitoring / Tire Pressure Warning System / Transmitter ID not Received in Main Mode (C2126/26)

DESCRIPTION

After all IDs are registered, DTC C2126/26 is set in the tire pressure warning ECU and the tire pressure warning light blinks for 1 minute and then comes on.

When the tire pressure warning ECU successfully receives radio waves from all the transmitters whose IDs are stored in the ECU, DTC C2126/26 is cleared and the tire pressure warning light goes off.

DTC No.	DTC Detection Condition	Trouble Area
C2126/26	After ID registration is completed, ECU does not receive radio waves from transmitters whose IDs are stored in ECU.	ID registration failure Tire pressure warning valve and transmitter Tire pressure warning antenna and receiver Wire harness or connector Tire pressure warning ECU

HINT:

If the IDs stored in the tire pressure warning ECU differ from the transmitter IDs, DTC C2126/26 is set. Check that the IDs in the ECU are the same as the transmitter IDs.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
It is necessary to perform registration (See page ) of the transmitter IDs into the tire
pressure warning ECU after the ECU and/or valve and transmitter has been replaced.

PROCEDURE

1.	IDENTIFY TRANSMITTER NOT RECEIVED

(a) Set all tire pressures to the specified value(s) (See page ).

(b) Turn the ignition switch off.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

(f) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(g) Check the values by referring to the table below.

Tire Pressure Monitor

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
ID1 Tire Inflation Pressure	ID1 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID2 Tire Inflation Pressure	ID2 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID3 Tire Inflation Pressure	ID3 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID4 Tire Inflation Pressure	ID4 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.

HINT:

*: It may take about 2 or 3 minutes until the values are displayed.

(h) Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(i) Check the Data List.

NOTICE:

It takes about 2 or 3 minutes to display the updated tire pressure data.
If no "ID Tire Inflation Pressure" data has changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then, rapidly release the tire pressure and recheck it.
Record the "ID Tire Inflation Pressure" data transmitter ID that corresponds to each tire.

(j) After confirming that the "ID Tire Inflation Pressure" data for one tire (ID1 to ID4) has changed, repeat this procedure for each wheel. Identify which transmitter is not being received.

Condition	Proceed to
One or more of transmitters are abnormal	A
All are normal	B

END

2.	CHECK TRANSMITTER ID

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(f) Check the values by referring to the table below.

Tire Pressure Monitor

Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
Registered ID1 Code	Registered ID1 code/ min.: 0 max.: FFFFFFF*	The ID No. registered in the transmitter ID1 is displayed	*: Displayed only when the ID No. is not registered.
Registered ID2 Code	Registered ID2 code/ min.: 0 max.: FFFFFFF*	The ID No. registered in the transmitter ID2 is displayed	*: Displayed only when the ID No. is not registered.
Registered ID3 Code	Registered ID3 code/ min.: 0 max.: FFFFFFF*	The ID No. registered in the transmitter ID3 is displayed	*: Displayed only when the ID No. is not registered.
Registered ID4 Code	Registered ID4 code/ min.: 0 max.: FFFFFFF*	The ID No. registered in the transmitter ID4 is displayed	*: Displayed only when the ID No. is not registered.

(g) Check the ID number on the identified transmitter by removing it from the tire and wheel.

(h) Confirm that the ID number on the transmitter and recorded transmitter ID match.

Result	Proceed to
Match	A
Do not match	B

GO TO STEP 4

3.	REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

(a) Replace the tire pressure warning valve and transmitter (See page ).

4.	REGISTRATION OF TRANSMITTER ID

(a) Perform registration (See page ).

5.	CONFIRM TIRE INFLATION PRESSURE (DATA LIST)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(f) Check the values by referring to the table below.

Tire Pressure Monitor

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
ID1 Tire Inflation Pressure	ID1 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID2 Tire Inflation Pressure	ID2 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID3 Tire Inflation Pressure	ID3 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID4 Tire Inflation Pressure	ID4 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.

HINT:

*: It may take about 2 or 3 minutes until the values are displayed.

If no "ID Tire Inflation Pressure" data has changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then, rapidly release the tire pressure and recheck it.

Result	Proceed to
Tire pressure values are not displayed.	A
All tire pressure readings are equal to specified values.	B

END

6.	REPLACE TIRE PRESSURE WARNING ANTENNA AND RECEIVER

(a) Replace the tire pressure warning antenna and receiver (See page ).

7.	CONFIRM TIRE INFLATION PRESSURE (DATA LIST)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(f) Check the values by referring to the table below.

Tire Pressure Monitor

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
ID1 Tire Inflation Pressure	ID1 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID2 Tire Inflation Pressure	ID2 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID3 Tire Inflation Pressure	ID3 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.
ID4 Tire Inflation Pressure	ID4 tire inflation pressure/ min.: Absolute pressure/ 0 kPa (0 kgf/cm2, 0 psi), Relative pressure/ -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure/ 638 kPa (6.4 kgf/cm2, 93 psi), Relative pressure/ 538 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2, 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for relative pressure, data has not been received*.

HINT:

*: It may take about 2 or 3 minutes until the values are displayed.
If no "ID Tire Inflation Pressure" data has changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then, rapidly release the tire pressure and recheck it.

Result	Proceed to
All tire pressure readings are equal to specified values.	A
Tire pressure values are not displayed.	B

END

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